Diaphragm Flashcards
What is the shape of the diaphragm?
Dome shaped
Where is the diaphragm located?
Between the thorax and abdomen
What are the two parts that the diaphragm consists of?
Peripheral muscular part and a central tendon
What is the origin of the diaphragm?
The sternal part originates in xiphoid
Costal part: lower six and costal cartilages
Lumbar part arises by two crura from upper 2-3 lumbar vertebrae
What is the insertion of the diaphragm?
Central tendon
What is the opening of the diaphragm at T8 for?
IVC and Right phrenic nerve
What is present at T10 of the diaphragm?
The right crus
oesphageal opening and the vagus nerve
What is present at T12 of the diaphragm?
Left crus
Aorta
and thoracic duct
azygus vein
What are the apertures of the diaphragm?
Caval foramen
oesphageal hiatus
aortic hiatus
What forms the caval foramen?
Hole in the central tendon
What does the caval foramen consist of?
R phenic nerve
Lymphatics
What level is the caval foramen?
T8
What is the oesphageal hiatus and where is it?
Opening in diaphragm for oesophagus and vagus nerve to pass at the right crus at T10
What does the oesophageal hiatus consist of?
Oesophagus
Vagus nerve
oesophageal vessels
Lymphatics
Where is the aortic hiatus and what is it made up of?
Gap behind diaphragm
formed by right and left crus and median acruate ligament
What does the aortic hiatus consist of?
Thoracic duct
azgos nerve
aorta
What level is the oesophageal hiatus?
T10
What level is the aortic hiatus?
T12
What are the structures of the two lesser aperture of the right crus?
greater and lesser right splachnic nerves
What are the structures of the three lesser aperture of left crus?
Greater and lesser splanchnic nervs and the hemiazygos vein
What are the structures of anterior to the diaphragm, just deep to the ribs
Superior epigastric vessels
